March 26, 2026
Spectrum Aborts at T-3 | Canada Loses Its Moon Rover | Triton Tilted Neptune
Episode Summary Today's episode opens with a brief update on the Isar Aerospace Spectrum rocket, which aborted at T-3 seconds on March 25 — just before engine ignition — with no new launch date yet announced. The main stories cover Canada's cancellation of its first lunar rover mission; the century-old mystery of Gamma Cassiopeiae's anomalous X-ray emissions finally solved by the XRISM space telescope; new research suggesting Neptune's axial tilt may have been caused by its captured moon Triton; NASA's Dragonfly rotorcraft entering full integration and testing ahead of a 2028 launch to Saturn's moon Titan; Russia returning to orbit from Baikonur Cosmodrome following last November's structural collapse; and the new SPHEREx telescope detecting a bipolar hydrogen shell around the remnant of Nova Persei 1901.
Story Sources Update — Isar Aerospace Spectrum NASASpaceFlight.com — Isar Aerospace scrubs second launch of Spectrum rocket https://www.nasaspaceflight.com/2026/03/isar-onward-and-upward/ Isar Aerospace Mission Updates https://isaraerospace.com/mission-updates-overview Story 1 — Canada Cancels Moon Rover Space.com — Canada cancels its 1st moon rover: 'It's hopefully not a lost cause' https://www.space.com/space-exploration/artemis/canada-cancels-its-1st-moon-rover-its-hopefully-not-a-lost-cause Canadian Space Agency — Spending Plan 2026-27 https://www.asc-csa.gc.ca/eng/publications/dp-2026-2027.asp Story 2 — Gamma Cassiopeiae Mystery Solved Space.com — Scientists finally solve century-old mystery of star with unexpected X-ray emissions https://www.space.com/astronomy/stars/scientists-finally-solve-century-old-mystery-of-star-with-unexpected-x-ray-emissions ESA / EurekAlert — XRISM solves famous star's 50-year mystery https://www.eurekalert.org/news-releases/1120872 ScienceDaily — Astronomers solve 50-year mystery of a naked-eye star's extreme X-rays https://www.sciencedaily.com/releases/2026/03/260325041723.htm Story 3 — Neptune's Tilt & Triton Astrobiology.com / arXiv — Neptune's Obliquity Was Likely Engendered By Triton's Tidal Evolution https://astrobiology.com/2026/03/neptunes-obliquity-was-likely-engendered-by-tritons-tidal-evolution.html Story 4 — Dragonfly Integration Testing NASA Science — NASA's Dragonfly Mission Begins Rotorcraft Integration, Testing Stage https://science.nasa.gov/blogs/dragonfly/2026/03/10/nasas-dragonfly-mission-begins-rotorcraft-integration-testing-stage/ Johns Hopkins APL — Dragonfly Mission Begins Rotorcraft Integration, Testing Stage https://www.jhuapl.edu/news/news-releases/260312-dragonfly-integration-begins Story 5 — Russia Returns to Orbit from Baikonur Universe Today — Russia Returns to Orbit from Baikonur Following Structural Collapse https://www.universetoday.com/ Story 6 — SPHEREx & Nova Persei 1901 Phys.org — Using NASA's SPHEREx space telescope, astronomers observe remnants of the eruption of Nova Persei 1901 https://phys.org/space-news/
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WEBVTT
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Before we dive into today's main stories, we have a
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quick update on a mission we've been following closely. I
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saw Aerospace's second Spectrum rocket launch onward and upward.
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And unfortunately it's not the news we were hoping for.
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On the evening of March twenty fifth, the Spectrum rocket
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was sitting on the pad at Hanoya Spaceport in Norway
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Countdown running world watching and the flight aborted at T
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minus three seconds, three seconds from ignition.
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The launch window closed without a second attempt, and as
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of right now, no new launch date has been announced.
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The cause of the abort hasn't been made public yet either.
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This was already a mission that had been delayed multiple
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times by bad weather, and now this for context.
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Spectrum's first flight last March ended about thirty seconds after
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liftoff when a vent valve opened unexpectedly and the rocket
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came down into the sea near the pad. Isar fixed
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the issue past static fire tests, loaded up five CubeSats
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and a science payload and went back to the pad
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and they got to T minus three seconds.
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Which, as painful as it is, does suggest the vehicle
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is healthy and the abort system is doing its job.
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We'll keep following this one for now. Isar's European dream
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of reaching orbit is still waiting.
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And we're going to stay in the world of difficult
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space news for our first main story today, because Canada
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has just canceled its first ever moon rover mission.
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The Water Seeking Lunar Rover project, which the Canadian Space
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Agency first announced back in twenty twenty one, has officially
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been terminated in Canada's spending plan for twenty twenty six
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to twenty twenty seven. It was a mission designed to
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explore the Moon's south pole, hunt for water ice, and
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probe the geology of our closest neighbor in space, and.
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It came remarkably close to being real. The rover was
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being built by Ontario company Canondenz's Aerospace under a forty
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three million Canadian dollar contract. It was at fhasee of development,
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approaching its critical design review later this year. That's not
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a concept on a whiteboard. That's hardware being built in
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a lab.
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The mission lead scientist Gordon Ozinski from Western University, known
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in a lunar community simply as oz told space dot
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Com that his team received the news back in February
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and spent a month trying to fight the cancelation, he said,
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and I love this quote. It's hopefully not a lost cause.
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The rover was expected to ride to the Moon on
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Firefly Aerospace is twenty twenty nine commercial Lunar Payload Services
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mission landing on the rim of Howarth Crater at the
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South Pole. Six instruments, twenty years of Canadian rover expertise
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wrapped into a thirty five kilogram vehicle. Gone.
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Canada says the knowledge and expertise built up through the
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program can be repurposed. There's a planned Canadian Lunar Utility
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rover in the pipeline, essentially a cargo vehicle to support
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future Artemis astronaut missions no earlier than twenty thirty three.
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Three companies are already doing preparatory studies for that vehicle.
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But there's a bigger picture here too. This news landed
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the same week NASA announced it was pausing the Gateway
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Lunar space station, and Gateway was supposed to be maintained
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by Canada's CANADARM three. That's a lot of uncertainty hitting
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the Canadian space program all at once. MBA Space, which
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makes Canada ARM three, has set its contract with the
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Canadian Space Agency is continuing and the ARM is still
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in the design phase, so there's flexibility to adapt. But still,
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and all.
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Of this is unfolding less than a week before the
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Artemis two launch, which includes Canadian astronaut Jeremy Hansen on
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the crew pill be the first non American to fly
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on a Moon mission. Canada is simultaneously about to hit
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one of its highest ever moments in space exploration while
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quietly canceling its lunar rover.
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Space is complicated, but we'll raise a glass for Oz
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on his team. They did remarkable work and that knowledge
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doesn't just disappear.
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All right. Let's switch from the geopolitical and the heartbreaking
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to the genuinely thrilling, because astronomers have just solved a
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mystery that has been haunting the field for over one
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hundred and fifty years.
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The star at the center of all this is called
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Gamma Cassiopeia or Gamma cast for short. It's actually visible
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to the naked eye. It forms the central peak of
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the W shape in the constellation Cassiopeia. And back in
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eighteen sixty six, an Italian astronomer named Angelo Seki noticed
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something very strange about.
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It its hydrogen signature. The hydrogen fingerprint that appears in
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a star's light was bright, where in stars like our
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own sun it normally shows up as a dark line.
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That was so so.
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Unusual it actually created a whole new classification of stars,
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the so called B stars, B for the hot blue
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white type and E for the peculiar emission. Gamma Cass
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was the first of its kind, and it's been mysterious
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ever since. Then.
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In the nineteen seventies, the mystery got bigger. Astronomers discovered
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Gamma Cass was pumping out incredibly intense X rays, the
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kind of X rays you'd expect from plasma, burning out
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around one hundred and fifty million degrees for context, that's
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about ten times hotter than the core of our own sun.
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It shone forty times brighter in X rays in a
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typical star of its size. Nobody could explain it.
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Two competing theories emerged. Either the X rays were being
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produced by magnetic interactions between the star and the disk
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of material spinning around it, or there was a hidden
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companion star pulling matter from Gamma Cass and heating it
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to extreme temperatures as it fell in the problem was
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no telescope was precise enough to settle the debate until now.
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Enter XRIISM, the X ray Imaging and Spectroscopy mission run
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by Japan's Space Agency JOCKXA in collaboration with NASA and ISSA.
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Using its Ultra High Precision Resolve instrument. The team observed
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gamma cast three times in December twenty twenty four, February
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twenty twenty five, and June twenty twenty five, and tracked
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how the X ray signature changed between observations, and.
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The result was definitive. The X ray emissions follow the
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orbital motion of the companion, not the b star itself.
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The hidden companion is a white dwarf, a dead star
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roughly the size of Earth, orbiting gamma casts on a
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two hundred and three day cycle and slowly siphoning material
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from the larger star. As that material falls onto the
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white dwarf, it heats to extraordinary temperatures and blazes in
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X rays.
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Team leader Yaile Nazi of the University of Liege called
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it extremely satisfying to finally have direct evidence after so
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much effort across so many research groups over so many decades.
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And this isn't just about one weird star. It confirms
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a whole class of binary systems that theorists predicted existed
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but had never been clearly identified. Yamma Cass is now
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the prototype for the Bee plus white dwarf binary family.
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A mystery that started in eighteen sixty six finally closed
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in twenty twenty six. That's the kind of scientific patience
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that makes you feel very small and very odd at
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the same time.
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Here's the question that sounds simple but turns out to
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be surprisingly tricky. Why is Neptune tilted?
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Neptune has an axial tilt of about twenty eight degrees,
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not as extreme as Uranus, which is basically rolling around
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on its side, but still a significant lean. For decades,
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the standard explanation was that Neptune must have been hit
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by something large during the Solar system's chaotic early period.
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It off axis big collisions with planetary embryos, that kind
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of thing.
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But new research is proposing a very different culprit, one
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that's been sitting right there in Neptune's own backyard all
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the time.
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Triton Creighton is Neptune's largest moon, and it's one of
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the strangest objects in the Solar System. Unlike virtually every
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other large moon, it orbits backwards in the opposite direction
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to Neptune's rotation. That alone tells you it wasn't born there.
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It was captured, probably from the Kuiper Belt, billions of
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years ago.
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And the new research suggests that capture event and specifically
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the weight Triton's orbit evolved after being captured, may have
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been enough to tilt Neptune's entire spin axis. The mechanism
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involves what's called a spin orbit resonance. As train's orbit
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gradually decayed due to tidal forces and circularized, it passed
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through a resonance with the fundamental frequency of the Solar System,
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and that resonance torqued Neptune's access over The simulations show
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tilt exceeding fifty degrees in some cases.
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So rather than a catastrophic external collision, the tilt could
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have been an inside job, Neptune's own rebellious moon slowly
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nudging its parent planet off kilter over millions of years,
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just by the gravitational dynamics of its captured backwards orbit.
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It's a beautiful piece of celestial mechanics, and it's a
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reminder of just how much one object can quietly reshape
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the world around it without anyone noticing. Over deep time.
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Brighton has always been my favorite chaotic moon. This just
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cements it now.
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This one is a genuine milestone, and one that's had
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a long road to get here. NASA's Dragonfly mission has
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officially entered the integration and testing phase. The rotorcraft lander
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that will one day fly over the surface of Saturn's moon, Titan,
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is being assembled right now.
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The work is happening at the Johns Hopkins Applied Physics
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Laboratory in Laurel, Maryland, APL which is leading the mission.
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And when we say rotorcraft, we mean a full car
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sized nuclear powered drone, not a prototype, not a model,
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the actual flight vehicle that is going to launch in
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twenty twenty eight and spend six years traveling to Titan.
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The early weeks of integration have focused on two critical components,
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the integrated electronics module essentially Dragonfly's brain, housing the core
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avionics including command, data handling, guidance, and navigation, and the
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power switching units that control the flow of electricity to
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all the instruments and systems, both past their first power
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on tests connected to the spacecraft's wiring system.
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Principal investigator Elizabeth Turtle called it, and this is a
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great line, the birth of our flight system, because that's
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really what integration is. All the components that have been
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designed and tested and refined separately are now coming together
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as one machine for the first time, and.
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The rest of the vehicle is taking shape. Two. The
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aeroshell and cruise stage are being integrated and tested at
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Lockheed Martin in Colorado, when tunnel testing at NASA Langley
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has been completed. The foam insulation that will protect Dragonfly
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from Titan's minus one hundred and eighty degree surface temperatures
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is being tested in a dedicated Titan chamber at APL.
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The flight radio has been delivered, the science payload is
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coming together at institutions around the world.
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Integration and testing will continue at APL through this year
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and into early twenty twenty seven, when system level testing
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moves to Lockheed Martin. Then it returns to APL for
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final environmental testing before heading to Kennedy's Space Center in
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spring twenty twenty eight for launch on a SpaceX Falcon Heavy.
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And why is Titan worth all of this? Because it
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is one of the most extraordinary places in the Solar System.
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It has a thick nitrogen atmosphere, lakes and rivers of
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liquid methane and ethane, complex organic chemistry on its surface,
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and likely a subsurface ocean of liquid water. It looks
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in many ways like a frozen early Earth, and studying
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it may help us understand how the chemistry of life
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got started. Dragonfly is going to fly to dozens of
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locations across its surface, sampling, imaging, sniffing the atmosphere.
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We are literally building the thing right now, and in
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twenty thirty four it lands on another world. That's extraordinary.
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Story five takes us to Kazakhstan and a moment that's
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been a long time coming for Russia's troubled space program.
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Baikanor Cosmodrome is one of the most storied launch sites
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in history, the place where Sputnik launched, where Yuri Gagarin launched,
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where the Soviet and then Russian space program wrote some
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of its most legendary chapters. But last November, one of
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its launch structures suffered a catastrophic structural collapse. It was
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a major blow to an already struggling program.
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The repairs are now complete, a fresh cargo mission has
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launched successfully from the same pad that failed, and Russia
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is back in orbit. On the surface, it looks like
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a recovery story, and in some ways it is.
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But the broader context is hard to ignore. The Russian
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space program that once put the first human in space,
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that was neck and neck with the United States in
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the greatest technological race in history, is now a shadow
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of what it was. Budget pressures, geopolitical isolation, brain drain,
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the loss of international partnerships, all of it has compounded
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over the years into a program that is struggling to
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find its footing.
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The successful launch from Baikunor is genuinely good news for
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the cosmonauts who depend on cargo resupply and for the
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engineers who work through the repairs, but it doesn't resolve
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the deeper questions about where the Russian space program goes
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from here, or whether it can rebuild its place among
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the stars.
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Base exploration has always been at its most powerful when
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it's collaborative, and whatever your views on geopolitics, there's something
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genuinely sad about watching a program with such an extraordinary
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legacy find itself so diminished. We hope the trajectory turns
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around and.
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We're closing today with something that is a combination of
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deep history and cutting edge astronomy, because NASA's brand new
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